Was the map built by hand?

You want the A/F ratio as close to 13.2:1, the map below was built using Dynojets Tunelink software, look at the A/F ratio is is nice & stable, yours seems all over the place. You would also get more HP & torque if the A/F ratio is around 13.2:1 on full power runs, it is OK to map to 13.6:1 at part throttle openings for better fuel consumption but no good for full power runs. Did you tell the Dyno tuner what you wanted before he tuned your bike?

If you want to get rid of the popping noise block off your AIS pipe.

http://i201.photobucket.com/albums/a.../afratio-1.jpg

http://fotos.miarroba.es/fo/6fda/2A4...1E4F971AB9.jpg

Your A/F ratio is flat, mine seems a Tour de France stage. The map was made by hand, we spend 4 hours working on it because the bike was running at 19,8 A/F ratio. The tuner said to me that I must try this map and give him a feedback, this afternoon I come back to the workshop and explain him my impresions.

Kev, I have my AIS removed, and bloket with a blanket in the head, a plug in the airbox and disconnecter the blue connector.

If finally I have my back fire problem solved I pay all of you a Paella!!

Thanks mates!

Kev, can I take your A/F ratio graf as a reference to show it to the tuner?

Looking at my graf, I think that maybe my bike is running too lean between 2500rpm to 3250rpm. And possibly this makes it poping. I am right?

Your A/F ratio is not good below 4250rpm, it is to lean then to rich.

The best I have found is to tune for 13.6:1 below 4250rpm & 13.2:1 above 4500rpm. I tune for 13.2:1 for 100% throttle runs, no problem using the graph as a guide line. The best way to tune a bike with a power commander is with Tune Link software it will get you map almost 100% perfect I never build map by hand anymore.

Hello Kev, hello mates. I�m back with my fuelling issues, I�ve been riding my XT and didn�t like how it runs, so last wednesday I cameback to the dyno.

We were doing things wrong, the dyno tuner puts the lambda sensor almost in the end of the exhaust because it is a �04 without lambda sensor, but my MM 2 into 1 has a plug in the headers, when we realise that, we changed the lambda sensor and put it into the headers. He said that maybe there were no major changes but, surprise! while the lambda in the end of the exhaust reads 17:1, in the headers it was reading 13:1... fuuuuuck! he said I�m stupid! puts the map all back to zero and start again...

Now I have a better A/F ratio graph, (we gained even 1hp more, 51hp) but we have to keep working because I stil have that annoying backfires...:confused5:

I think that the more we rich the mixture the less backfires happen, but if I make it to rich the bike runs bad... we wil see

Saludos!

Next dyno date, on monday morning. I�ll post the results!

Great:thumbsup[1]:

Conclusion: we made a new map much leaner than the old one and bike goes better now. It still has a bit of back firing when I drop a gear or two and it revs high, but now it is ok for me.

Now time to ride and enjoy.

Kev and kris007 if you come to Spain I�ll pay you some beers! Thanks!

We have a Spanish friend come to stay with us for 2 weeks stopped 2 years!! a while back, just down the road from you in Alzira,we'll be there for the GP at the end of the year.

Hello, I live in a small town ten kilometres close to Alzira and my brother lives in London since 2009. Maybe we can do a Spain-England meeting for the GP! with paella of course...